kern: src/main.c annotate

kern

annotate src/main.c @ 10:b11a86695493

interrupt handling

author	John Tsiombikas <nuclear@member.fsf.org>
date	Fri, 18 Feb 2011 08:42:32 +0200
parents	611b2d66420b
children	eaec918de072

rev	line source
nuclear@1	1 #include <stdio.h>
nuclear@0	2 #include "vid.h"
nuclear@1	3 #include "term.h"
nuclear@2	4 #include <asmops.h>
nuclear@7	5 #include "segm.h"
nuclear@10	6 #include "intr.h"
nuclear@2	7
nuclear@2	8 /* special keys */
nuclear@2	9 enum {
nuclear@2	10 LALT, RALT,
nuclear@2	11 LCTRL, RCTRL,
nuclear@2	12 LSHIFT, RSHIFT,
nuclear@2	13 F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,
nuclear@2	14 CAPSLK, NUMLK, SCRLK, SYSRQ,
nuclear@2	15 ESC = 27,
nuclear@2	16 INSERT, DEL, HOME, END, PGUP, PGDN, LEFT, RIGHT, UP, DOWN,
nuclear@2	17 NUM_DOT, NUM_ENTER, NUM_PLUS, NUM_MINUS, NUM_MUL, NUM_DIV,
nuclear@2	18 NUM_0, NUM_1, NUM_2, NUM_3, NUM_4, NUM_5, NUM_6, NUM_7, NUM_8, NUM_9,
nuclear@2	19 BACKSP = 127
nuclear@2	20 };
nuclear@2	21
nuclear@2	22 /* table with rough translations from set 1 scancodes to ASCII-ish */
nuclear@2	23 static int keycodes[] = {
nuclear@2	24 0, ESC, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b', /* 0 - e */
nuclear@2	25 '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* f - 1c */
nuclear@2	26 LCTRL, 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', /* 1d - 29 */
nuclear@2	27 LSHIFT, '\\', 'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', RSHIFT, /* 2a - 36 */
nuclear@2	28 NUM_MUL, LALT, ' ', CAPSLK, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, /* 37 - 44 */
nuclear@2	29 NUMLK, SCRLK, NUM_7, NUM_8, NUM_9, NUM_MINUS, NUM_4, NUM_5, NUM_6, NUM_PLUS, /* 45 - 4e */
nuclear@2	30 NUM_1, NUM_2, NUM_3, NUM_0, NUM_DOT, SYSRQ, 0, 0, F11, F12, /* 4d - 58 */
nuclear@2	31 0, 0, 0, 0, 0, 0, 0, /* 59 - 5f */
nuclear@2	32 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 60 - 6f */
nuclear@2	33 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* 70 - 7f */
nuclear@2	34 };
nuclear@2	35
nuclear@0	36 void kmain(void)
nuclear@0	37 {
nuclear@2	38 clear_scr();
nuclear@2	39 puts("kernel starting up");
nuclear@2	40
nuclear@7	41 init_segm();
nuclear@10	42 init_intr();
nuclear@7	43
nuclear@2	44 set_text_color(YELLOW);
nuclear@2	45 puts("<initialization code goes here>");
nuclear@2	46 set_text_color(LTGRAY);
nuclear@1	47 puts("hello world!");
nuclear@2	48
nuclear@2	49 for(;;) {
nuclear@2	50 char c, keypress;
nuclear@2	51 do {
nuclear@2	52 inb(keypress, 0x64);
nuclear@2	53 } while(!(keypress & 1));
nuclear@2	54 inb(c, 0x60);
nuclear@2	55 if(!(c & 0x80)) {
nuclear@7	56 putchar(keycodes[(int)c]);
nuclear@2	57 }
nuclear@2	58 }
nuclear@0	59 }